Using Kolmogorov–Smirnov (KS) test, LP3 was found to be the best distribution for the Kabul River. Conventional flood frequency analysis, involving log-normal, Gumbel’s, and log-Pearson type III (LP3) distributions, was used to calculate extreme flows with different return periods. Owing to its reasonable accuracy and free availability, shuttle radar topography mission digital elevation model was chosen for the extraction of geometrical data for the river. The intent is to assist policy makers and planners in the development of flood mitigation measures for the Khyber Pakhtunkhwa Province, which experienced unprecedented floods in July/August 2010 exposing the vulnerability of the province to this natural catastrophe. This paper describes the application of HEC-RAS model to the development of floodplain maps for the part of Kabul river that lies in Pakistan.
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